Its kind of wierd how these glitches JUST APEAR out of nowhere and screw the game up COMPLETELYThe No Mercy elevator...when it gets to floor level...the doors dont open.Voted restart..and it happend again.

random things happen now and again, like there being no tank in the train box during the sacrifice campaign. That happened twice to me, now it is ok again. Dont stress about it, especially as the elevator is very near the beginning.

The elevator glitch has happened to me before. When I get to the 28th floor of the hospital, they won't open. The glitch has only happened twice, when an SI get's stuck in the elevator doors as they are closing it/they will block the door and glitch it up. It sucks, I know.